<form role="form" action="login" >
    <div class="form-group">
        <label for="exampleInputEmail1">用户名</label>
        <i class="fa fa-envelope"></i>
        <input type="text" placeholder="manager" class="form-control" name="username" id="username" >
    </div>
    <div class="form-group">
        <label for="exampleInputPassword1">登录密码</label>
        <i class="fa fa-lock"></i>
        <input type="password" placeholder="1q" class="form-control" name="password" id="exampleInputPassword1" >
    </div>
    <div class="form-actions">
        <label class="checkbox"> <input type="checkbox" class="uniform" value=""> 保存密码</label>
        <button type="submit" class="btn btn-primary">登录</button>
    </div>
</form>